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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-08-03 19:55:32 +0530
committerEric Van Hensbergen <ericvh@gmail.com>2011-09-06 08:17:15 -0500
commitf88657ce3f9713a0c62101dffb0e972a979e77b9 (patch)
treed5541a3d82c8c1d65e11e397582eb8a6c2d627e9 /fs/9p/vfs_inode_dotl.c
parentb49d8b5d7007a673796f3f99688b46931293873e (diff)
fs/9p: Add OS dependent open flags in 9p protocol
Some of the flags are OS/arch dependent we add a 9p protocol value which maps to asm-generic/fcntl.h values in Linux Based on the original patch from Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'fs/9p/vfs_inode_dotl.c')
-rw-r--r--fs/9p/vfs_inode_dotl.c55
1 files changed, 54 insertions, 1 deletions
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index a3f2540cc4b2..aded79fcd5cf 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -191,6 +191,58 @@ v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
return inode;
}
+struct dotl_openflag_map {
+ int open_flag;
+ int dotl_flag;
+};
+
+static int v9fs_mapped_dotl_flags(int flags)
+{
+ int i;
+ int rflags = 0;
+ struct dotl_openflag_map dotl_oflag_map[] = {
+ { O_CREAT, P9_DOTL_CREATE },
+ { O_EXCL, P9_DOTL_EXCL },
+ { O_NOCTTY, P9_DOTL_NOCTTY },
+ { O_TRUNC, P9_DOTL_TRUNC },
+ { O_APPEND, P9_DOTL_APPEND },
+ { O_NONBLOCK, P9_DOTL_NONBLOCK },
+ { O_DSYNC, P9_DOTL_DSYNC },
+ { FASYNC, P9_DOTL_FASYNC },
+ { O_DIRECT, P9_DOTL_DIRECT },
+ { O_LARGEFILE, P9_DOTL_LARGEFILE },
+ { O_DIRECTORY, P9_DOTL_DIRECTORY },
+ { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
+ { O_NOATIME, P9_DOTL_NOATIME },
+ { O_CLOEXEC, P9_DOTL_CLOEXEC },
+ { O_SYNC, P9_DOTL_SYNC},
+ };
+ for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
+ if (flags & dotl_oflag_map[i].open_flag)
+ rflags |= dotl_oflag_map[i].dotl_flag;
+ }
+ return rflags;
+}
+
+/**
+ * v9fs_open_to_dotl_flags- convert Linux specific open flags to
+ * plan 9 open flag.
+ * @flags: flags to convert
+ */
+int v9fs_open_to_dotl_flags(int flags)
+{
+ int rflags = 0;
+
+ /*
+ * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
+ * and P9_DOTL_NOACCESS
+ */
+ rflags |= flags & O_ACCMODE;
+ rflags |= v9fs_mapped_dotl_flags(flags);
+
+ return rflags;
+}
+
/**
* v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
* @dir: directory inode that is being created
@@ -259,7 +311,8 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
"Failed to get acl values in creat %d\n", err);
goto error;
}
- err = p9_client_create_dotl(ofid, name, flags, mode, gid, &qid);
+ err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
+ mode, gid, &qid);
if (err < 0) {
P9_DPRINTK(P9_DEBUG_VFS,
"p9_client_open_dotl failed in creat %d\n",